LifeMeteor impact trapped ancient swamp plants in glass The first traces of life found in glass from an impact crater supports the idea that microbes travelling on space rocks could have seeded the solar system ¿ìè¶ÌÊÓÆµ
EarthFor instant climate change, just add one large comet Two geologists claim atmospheric CO2 levels more than doubled in a single year 55 million years ago – the speed makes a comet impact the likely culprit ¿ìè¶ÌÊÓÆµ